412 OLD MYOCARDIAL INFARCT


Code Information

Diagnosis Code: 412

Short Description: Old myocardial infarct

Long Description: Old myocardial infarction

Code Classification:

  • Diseases of the circulatory system (390–459)
    • Ischemic heart disease (410-414)
      • 412 Old myocardial infarction
        • 412 Old myocardial infarct

Code Version: 2015 ICD-9-CM


References to Index of Diseases and Injuries

The code 412 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Disease, diseased - see also Syndrome
    • heart (organic) 429.9
      • ischemic (chronic) (see also Ischemia, heart) 414.9
        • asymptomatic 412
        • diagnosed on ECG or other special investigation but currently presenting no symptoms 412
  • History (personal) of
    • cardiovascular disease V12.50
      • myocardial infarction 412
    • circulatory system disease V12.50
      • myocardial infarction 412
    • myocardial infarction 412
  • Infarct, infarction
    • myocardium, myocardial (acute or with a stated duration of 8 weeks or less) (with hypertension) 410.9
      • diagnosed on ECG, but presenting no symptoms 412
      • healed or old, currently presenting no symptoms 412
      • past (diagnosed on ECG or other special investigation, but currently presenting no symptoms) 412
        • with symptoms NEC 414.8
      • previous, currently presenting no symptoms 412
  • Occlusion
    • artery NEC (see also Embolism, artery) 444.9
      • coronary (thrombotic) (see also Infarct, myocardium) 410.9
        • healed or old 412
    • coronary (artery) (thrombotic) (see also Infarct, myocardium) 410.9
      • healed or old 412
  • Scar, scarring (see also Cicatrix) 709.2
    • myocardium, myocardial 412
  • Thrombosis, thrombotic (marantic) (multiple) (progressive) (vein) (vessel) 453.9
    • artery, arteries (postinfectional) 444.9
      • coronary (see also Infarct, myocardium) 410.9
        • healed or specified as old 412
    • cardiac (see also Infarct, myocardium) 410.9
      • healed or specified as old 412
    • coronary (artery) (see also Infarct, myocardium) 410.9
      • healed or specified as old 412
    • intramural (see also Infarct, myocardium) 410.9
      • healed or specified as old 412
    • mural (heart chamber) (see also Infarct, myocardium) 410.9
      • healed or specified as old 412

Crosswalk Information

The code 412 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
412 Right Arrow I25.2 Old myocardial infarction
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description


This page was last updated on: 10/1/2014